Evaporating apparatus.



Patented A r. 29, 1902;

No. 698,733. I

U. M. NILSUN.

EVAPORATING- APPARA'IZUS.

I (Application filed July 19, 1901.) (No Model.) 2 Sheets-Sheet l.

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I I drmmw mm Witness I UNiTE STATES ATE"? Fries.

OSCAR M. NILSON, OF MANSFIELD, LOUISIANA.

EVAPORATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 93,733, dated April 29, 1902.

Application filed July 19, 1901. Serial No. 68,943- (No model.) 7

To all whmn it 77l/(LZ/ concern:

Be it known that I, OSCAR M. NILSON, a citiimprovements in apparatus for boiling canejuice and reducing it to sugar density.

The primary object of the invention is to provide a novel arrangement of hot-air fines, whereby the maximum heating-surface is presented to the light syrup made from previously-superheatedjuice and the samethereby quickly reduced to the desired density.

With this and other objects in view the invention consists in the novel construction and combination of parts hereinafter more fully described and claimed, and illustrated in the accompanying drawings, showing the preferred form of my invention, and in which.

Figure 1 is an elevation of the complete ap paratus comprising myinvention. Fig. 2 is a vertical longitudinal section therethrough.

Fig. 3 is a plan View of the evaporating-pan; and Fig. 4 is a section on line {6 at, Fig. 2.

Referring to the figures by numerals of ref:

erence, 1 is an oven or furnace, preferably" formed of masonry and having a suitable grate 2 and inlets 3. I the furnace,at the rear thereof,is the enlarged lower end 4 of a cylindrical boiler 5.

the back wall of the combustion-chamberof the furnace.

Both ends of the boiler 5 are closed, and fines 7 extend longitudinally therein from the", r

The lines are. then bent at an angle and open through the top to the enlarged portion 4.

Fitted within the top of.

bottom 6 of the boiler is inclined .and forms.

Sis the pan proper, '11, of the evaporator. This pan is arrange'dabove the boiler 5 and preferably extends along the fine 8 to apoint adjacent to the stack 10. Vertical strips 12 are arranged upon the bottom of the pan 11 and extend partly across the same from opposite sides alternately. the one nearest the boiler 5, extends entirely across the pan and forms a dam, over which the juice is adapted to flow "intotubes 14,

which con'nectthe bottom of the pan 1i with the interior of the boiler 5.

These tubes are preferably arranged in circles in groups, and a single tube is provided at the center of the boiler-top. V W

An outlet-valve 15 is arranged at the lowest point of the boiler 5, preferably at the'rear of the furnace 1.

Inclined flanges lb prevent the, juice from overflowing from the pan l1. 7

The juice of the cane is forced into the end of the pan-11 nearest the stack-lOibyTmeans of a suitable pump 17. As the'juice moves back and forth between the strips 1-2 i-twil1 be thoroughly heated and evaporatedbythe hot gases passing from the furnace 1{ througl1 the flue 8. The juice will finallyhow over the dam 13 and down into the boiler 5 through the tubes 14. The fines-7 inthe boi ler will be completely surrounded by thejuice, the

density of which Willbequicklyincreased as it boils.- The density may be readily determined by means of a desired numberof glass tubes 18', having outlets'(not 'shown) and suitably arran ged u po'n andcom'muriicati'ng with 11116 boiler. When the density desiredis secured,fthe product is withdrawn from the boiler in'acontinuous stream through the out- -let 15.

Suitable means (not shown) may be provided whereby access may be readily obtained to theinterior of the boiler 5 and flue 8 for cleaning purposes.

Anotherstrip 13, which is IOC what I therefore claim as ne\v,and desire to secure by Letters Patent, is-

1. The combination with a furnace; of a boiler, an inclined bottom thereto forming a wall of the combustion-chamber of the furnace, an evaporating-pan, a, flue extending thereunder, flues extending through the boiler and adapted to convey the products of combustion from the furnace to the flue of the pan, tubes connecting the pan with the interior of the boiler, and a valved'outlet from the boiler.

2. The combination with a furnace, of a boiler, an inclined bottom thereto forming one of the walls of the combustion-chamber of the furnace, an evaporating-pan, a flue thereunder having an outlet, fiues extending longitudinally through the boiler and adapted to conduct the products of combustion from the furnace to the flue of the pan, al-

ternately arranged cross-strips in the pan, a

dam, tubes connecting the pan with the interior of the boiler, whereby juice is permitted to flow into said boiler and surround the fines therein, and a valved outlet from the boiler at the lowest point thereof.

3. The combination with a furnace; of a boiler forming one wall of the combustionchamber of the furnace, an evaporating-pan, a flue thereunder, means for conducting the products of combustion from the furnace to OSCAR M. NILSON.

\Vitnesses: JOHN M. IIUSON, S. Ii. BELL, Jr. 

